Bitcoin
A decentralized digital currency and payment network that lets people send value without relying on a bank or central authority.
Bitcoin is a decentralized digital currency and the name of the network that records and transfers it. Instead of being issued by a government or managed by a company, Bitcoin runs on open-source software operated by participants around the world. Transactions are grouped into blocks and added to a public ledger called the blockchain, using a process known as mining to help secure the network and agree on the order of transactions.
Bitcoin matters because it introduced a way to send scarce digital value over the internet without needing a bank, card network, or payment app as the central trusted party. People use it for peer-to-peer payments, long-term savings, donations, cross-border transfers, and as a base asset in parts of the crypto ecosystem. A practical comparison is digital cash: if you control your private keys, you can send Bitcoin directly to another person, but unlike physical cash, the transfer is recorded on a public blockchain and usually cannot be reversed.
Other terms in Bitcoin
ASIC
A specialized computer chip built to do one task very efficiently, commonly used in Bitcoin mining to perform hashing calculations.
BTC
The ticker symbol for bitcoin, the native currency of the Bitcoin network.
Block Height
A block height is the number that shows a block’s position in a blockchain, counted from the first block.
Block Reward
New cryptocurrency paid to a miner or validator for successfully adding a block to a blockchain.